[PATCH v2 3/4] arm64: dts: mediatek: Use DP AltMode defines
Sebastian Reichel
sre at kernel.org
Sat Oct 17 12:59:32 PDT 2026
From: Sebastian Reichel <sebastian.reichel at collabora.com>
Use the new USB-C DP AltMode defines for the SVID and the capabilities
VDO to make the DTs more readable. This also fixes up mt8390 Genio
platform incorrectly announcing UFP_D (upwards facing) support. This
feature is unfortunately not supported by the SoC.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel at collabora.com>
---
arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi | 8 ++++++--
arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi | 10 ++++++++--
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
index 669eaec662f3..9f75ae3c32d2 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
@@ -527,8 +527,12 @@ PDO_FIXED_DUAL_ROLE |
altmodes {
displayport {
- svid = /bits/ 16 <0xff01>;
- vdo = <0x001c1c47>;
+ svid = /bits/ 16 <USB_SVID_DP_ALTMODE>;
+ vdo = <VDO_DP(DP_CAP_DPAM_V2_0, DP_CAP_CABLE_TYPE_PASSIVE,
+ DP_CAP_UHBR_13_5_UNSUPPORTED,
+ DP_PIN_UFP_NONE, DP_PIN_DFP_C_D_E,
+ DP_CAP_USB2_USED, DP_CAP_RECEPTACLE,
+ DP_CAP_SIGNALLING_HBR3, DP_CAP_DFP_D)>;
};
};
diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
index aef908df530e..d41638e74291 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
@@ -597,8 +597,14 @@ PDO_FIXED_DUAL_ROLE |
altmodes {
displayport {
- svid = /bits/ 16 <0xff01>;
- vdo = <0x00001c46>;
+ svid = /bits/ 16 <USB_SVID_DP_ALTMODE>;
+ vdo = <VDO_DP(DP_CAP_DPAM_V2_0,
+ DP_CAP_CABLE_TYPE_PASSIVE,
+ DP_CAP_UHBR_13_5_UNSUPPORTED,
+ DP_PIN_UFP_NONE, DP_PIN_DFP_C_D_E,
+ DP_CAP_USB2_USED, DP_CAP_RECEPTACLE,
+ DP_CAP_SIGNALLING_HBR3,
+ DP_CAP_DFP_D)>;
};
};
--
2.53.0
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